Arduino 4 Digit 7 Segment Multiplexed Display Board Using ATmega328 Chip

Tiny 4 Digit 7 Segment Arduino compatible display module  to create  display related projects like, counter, timer, thermometer, games, voltmeter, current meter, light meter,  and other projects required 4 digit display,   on board connector provided to program the Arduino boot-loader and Arduino code using Arduino IDE. Circuit works with 5V DC. Features Supply 5V DC 4 Digit 7 Segment

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Heat Activated Cooling Fan Controller Circuit Using LM393-LM358 & LM35 Temperature Sensor

Heat activated cooling fan controller ( Thermal Activated Cooling Fan Driver Circuit) is a simple project which operates a Brush-Less fan when the temperature in a particular area goes above a set point, when temperature return normal, fan automatically turns off. The project is built using LM358 Op-amp ( Use LM393 instead for good performance) ,  and LM35 temperature Sensor.

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